In the tease, which was directed by David Nutter (a "Game of Thrones" veteran director who did the fifth-season finale), Jon Snow meets up with Arya and Sansa Stark in the Winterfell crypts. The video is not actual season-eight footage — instead, it's similar to past teasers HBO has crafted that address coming themes of the season. The crypt teaser begins with heavy overtures of Jon's true Targaryen parentage as he walks past Lyanna Stark's crypt.

The major source of excitement for fans will be seeing Jon and Arya reunited. The two haven't seen each other since the second episode of season one, when Jon gifted Arya her precious sword, Needle. In the tease, as the three Stark kids stand in front of their own crypt statues, a frost creeps down the hallway. The signal of the White Walkers causes Jon and Arya to draw their blades, anticipating the coming fight.

Another prominent part of the teaser is the feather in front of Lyanna's crypt ( you can read more on that here). King Robert Baratheon placed the feather there on the very first episode of the series. Later, on the fifth season, Sansa touched the feather when she visited her aunt's statue.

Ned Stark with baby Jon and his sister, Lyanna Stark. HBO

Jon has yet to find out he's half Targaryen and half Stark, but that revelation will surely be a major part of his story line on the coming season.

The final season of the series will be six episodes long, as opposed to its previous standard 10-episode seasons. Despite having fewer installments, those episodes are reportedly all longer than an hour, with some possibly at feature length.

Sansa greets them and tells Dany, "Winterfell is yours, Your Grace." This is a direct callback to the first-ever "Game of Thrones" episode, in which Ned Stark welcomed Robert to the castle and told him Winterfell was his.